744787394 has 16 divisors (see below), whose sum is σ = 1210244280. Its totient is φ = 343746000.

The previous prime is 744787387. The next prime is 744787397. The reversal of 744787394 is 493787447.

It can be written as a sum of positive squares in 4 ways, for example, as 119137225 + 625650169 = 10915^2 + 25013^2 .

It is a super-2 number, since 2×744787394² = 1109416524522622472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (744787397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80357 + ... + 89144.

Almost surely, 2^744787394 is an apocalyptic number.

744787394 is a deficient number, since it is larger than the sum of its proper divisors (465456886).

744787394 is a wasteful number, since it uses less digits than its factorization.

744787394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169542 (or 169516 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 53.

The square root of 744787394 is about 27290.7932094324. The cubic root of 744787394 is about 906.4505269521.

Adding to 744787394 its sum of digits (53), we get a palindrome (744787447).

The spelling of 744787394 in words is "seven hundred forty-four million, seven hundred eighty-seven thousand, three hundred ninety-four".